Hot water circulating system



' Feb. 20, 1934- DE ELLA B. MAYBERRY HOT WATER CIRCULATING SYSTEM Filed April' 28, 1932 3 Sheets-Sheet l ,De Ella BJlda7Zerr7 Feb. 20, 1934. DE ELLA B. MAYBERRY 1,943,425

HOT WATER CIRCULATING SYSTEM Filed April 28, 1932 3 Sheets-Sheet 2 OF-P H I 1J8 Ella li/l fayerry Feb. 20, 1934.

DE ELLA B. MAYBERRY 1,943,425

HOT WATER CIRCULATING SYSTEM Filed April 28, 1952 3 Sheets-Sheet 3 amen view ,De Ella B/Ifiz 756177 Patented Feb. 20, 1934 UNITED STATES PATENT OFFICE 5 Claims.

This invention relates to a hot water circulating system designed primarily for use for heating dining and lunch room equipment, but it is to be understood that a system, in accordance with this invention, may be employed in any connection for which it may be found applicable, and the invention has for its object to provide, in a manner as hereinafter set forth, a system of the class referred to which depends for its heating function by the utilization of waste heat from a stove or range customarily employed in dining and lunch rooms for the cooking of food stuffs.

A further object of the invention is to provide, in a manner as hereinafter set forth, a system of the class referred to, so constructed and arranged for the heating of dining and lunch rooms equipment which requires a continuous supply of heat for maintaining cooked articles of food in a warm, palatable state.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a system for the purpose referred to which is comparatively simple in its construction, strong, durable, thoroughly efficient in its use, readily assembled and comparatively inexpensive to set up.

To the above ends essentially, and to others which may hereinafter appear, the invention consists of such parts, and such combination of parts which fall Within the scope of the invention as claimed.

In the drawings:

Figure 1 is a front elevation of a hot water circulating system in accordance with this invention.

Figure 2 is a front elevation of a modified form oi the invention.

Figure 3 is a view similar to Figure l of still another modified form of the invention.

Figure 4 is a front elevation of still another modified form of the invention.

Figure 5 is a top plan view of a combined stove or range top and water container.

Figures 6, 7 and 8 are sectional views taken on lines 6-6, 7-7 and 88 respectively Figure 1.

Referring to Figure 1 of the drawings, a cooking range of the coal burning type is indicated at 1, a steam table at 2, a hot water receiving tank at 3, and a 'ccii'ee urn 4 having a water jacket 5 into which opens the tank 3. The jacket 5 surrounds the body and bottom of urn 4. Lids 6, 7 are provided for the tank 3 and urn 4 respectively.

Extending from the bottom of the jacket 5 of the urn 3 to the range 1 is a water return pipe 8 provided with a check valve 9. The jacket 5 is provided with a thermometer 5'. The pipe 8 is formed with a U-shaped part 10 which is extended into and is heated from range 1. The pipe 8 includes a vertical branch 11 which opens into the bottom of U-shaped part 10, the latter being disposed at right angles to branch 11. The top 12 of U-shaped part 10 is of greater length than its bottom and opens into a hot water conducting coil 13 positioned within the steam table 2, the latter being arranged between tank 3 and range 1. Leading from the top 12 of part 8 is a safety valve device 14 opening into a heating space formed in table 2 above coil 13. Leading from the latter and opening into the tank 3 is a hot water conducting pipe 15 provided with a valve 16 and a thermostatically controlled shut ofi? valvular device 1'7, the latter extends into tank 3. Communicating with pipe 15 at a point rearwardly of check valve 16 is an overflow pipe 18 which extends into the steam table 2 and discharges into a receptacle 19 arranged below coil 13. A valve feed pipe is indicated at 20 and is formed with a manually operated cut off 21, a valve 22 and a float operated regulating valve 23 arranged between the cut off 21 and valve 22. Within tank Bis a float member 24 connected to and for actuating a link and lever mechanism 25 functioning to close valve 23. The mechanism 25 is connected to the stem of valve 23, as at 26. The pipe 20 opens into the bottom of tank 3, and the latter is of less diameter than the urn. The form shown in Figure 1 provides an automatically controlled hot water cir-. culating system.

Referring to Figure 2, a cooking range, a steam table, a coffee urn and water heating coil arranged within the steam table are indicated at 27, 28, 29 and 30 respectively. A combined water return and feed pipe at 31, the latter is provided with a cut off 32. Extending from the bottom of urn 29 to pipe 31 is a valved controlled discharge pipe 33. The pipe 31 has a laterally disposed U- portion 34 which extends into and is heated by the range 27. The top of U-portion 34 opens into coil 30 and leading from the top of portion 34 and opening into a heating space within table 28 above coil 30 is a heat conducting pipe 35. Extended from the top of portion 34 is a valved controlled overflow pipe 36. A hot water conducting pipe 37 extends from the coil 30 to the um 29 and is provided with a cut off 38 and a thermometer 39.

Referring to Figure 3, a gas cooking stove or range is indicated at 40 and which has seated in its top a pair of independent water receptacles or fronts 41, 42. A steam table is indicated at 43 and a coffee urn at 44. The receptacles 41, 42 can be supplied with water in any suitable manner. The range 40 is arranged between table 43 and urn 44. Arranged within table 43 is a perforated heating pipe 45. Leading from receptacle 41 to the coil 45 is a hot water conducting pipe 46 and leading from coil 45 to receptacle 41 is a water return pipe 47 provided with a check valve 48. Leading from the receptacle 42 to the urn 44 is a hot water conducting pipe 49 provided with a check valve 50 anda thermometer 51. Leading from the um 44 to the receptacle 42 is a water fit return pipe 52 provided with a check valve 53. Extended from pipe 49 is an overflow pipe 54.

The form shown in Figure 4 includes a water receptacle or front 54a which provides the top of a gas range 55. A steam table is indicated at 56, a tank at 57 and a coffee urn at 58. The tank 57 and urn 58 are of the same form as shown in Figure 1. Within table 56 is arranged a hot water coil 59 with which communicates a hot water supply pipe 60 leading from receptacle 54. Leading from the bottom of urn 58 and opening into receptacle 54 is a water return pipe 61 provided with a check valve 62. Leading from coil 59 to tank 57 is a hot water conducting pipe 63 provided with a check valve 64 and a thermostatically controlled closure valvular device 65 extended into tank 57. Leading to the bottom of the latter is a water feed pipe 66 provided with a manually operated out off 67, a regulating valve 68 and a float operated closure valve 69 operated from a pivotally mounted float actuated lever and link mechanism '70 attached to the stem of valve 69. The float for operating mechanism '70 is designated '71 and arranged in tank 57. The pipe 63 is formed with an overflow branch 72.

The water receptacles or fronts 41, 42, 54a are of the form shown in Figures 5 to 8 consisting of an oblong body l2 formed of a bottom '73 which inclines downwardly from one end to the other, a flat top '74, a pair of end walls 75, '76 and a pair of side walls '77, 78. The bottom 73 and top '74 are formed with aligning openings '79, respectively corresponding in number to the number of burners of the gas range arranged below the receptacle. The openings conform in contour to that of the burners. The walls of openings in the bottom 73 are connected to the walls of the openings in the top 74 by tubular members 81 corresponding in contour to that of the openings and provide flues for the passage of the flames and products of combustion for the purpose of cooking food stuffs carried by cooking utensils mounted over the openings in the top 74. The receptacle not only provides a water heater but further provides for the cooking of food stuffs in the utensils mounted thereon. The bottom I3 is formed with an opening 82 for connecting a water intake pipe thereto. The top '74 is provided with an opening 83 for connecting a water outlet pipe thereto. That end of smallest height of body '72 has depending supports 84 to provide for the height thereof to be the same as that end of body 72' of greatest height whereby the latter will be supported from the range in a level manner.

What I claim is:

1. In a hot water system, the combination of a heating element, a steam table, a coffee urn having a water jacket, a water receiving means for communication with and for supplying hot water to said jacket, a water supply line opening into the bottom of said means, a regulating valve in said line, a float operated lever mechanism for said valve and having the float thereof arranged in said means, a water circulating line leading from said jacket to said means and provided intermediate its ends respectively with an offset portion extending into said heating element and with a heating coil for and for positioning within the steam table, and an overflow pipe connected to said circulating line adjacent to one end of said coil.

2. In a hot water system, the combination of a heating element, a steam table, a coffee urn having a water jacket, 2. water receiving means for communication with and for supplying hot water to said jacket, a water supply line opening into the bottom of said means, a regulating valve in said line, a float operated lever mechanism for said valve and having the float thereof arranged in said means, a water circulating line leading from said jacket to said means and provided intermediate its ends respectively with an offset portion extending into said heating element and with a heating coil for and for positioning within the steam table, and a thermostatically controlled valve interposed in said circulating line in proximity to its point of connection with said water receiving means and having its thermostatic element extending into the latter.

3. In a hot water system, the combination of a heating element, a steam table, a coffee urn having a heating water space, a hot water circulating pipe adapted to communicate at spaced points with the heating water space of the urn, said line provided intermediate its ends respectively with an offset portion extending into said heating element, with a heating coil for and for positioning within the steam table and with an overflow extension adjacent one end of said coil, and valves in said line in proximity to the ends thereof.

4. In a hot water system, the combination of a heating element, a steam table, a coffee urn having a water jacket, a water receiving means for communication with and for supplying hot water to said jacket, a water supply line opening into the bottom of said means, a regulating valve in said line, a float operated lever mechanism for said valve and having the float thereof arranged in said means, a water circulating means heated intermediate its ends by said heating element and leading from said jacket to said water receiving means, said water circulating means provided intermediate its ends and adjacent to its point being heated with a heating coil positioned Within the steam table, and a thermostatically controlled controlling valve for said water circulating means interposed in the latter in proximity to said water receiving means and having the thermostatic element thereof extending into the latter.

5. In a hot water system, the combination of a heating element, a steam table, a coffee urn having a water jacket, a water receiving means for communication with and for supplying hot water to said jacket, a water supply line opening into the bottom of said means, a regulating valve l in said line, a float operated lever mechanism for said valve and having the float thereof arranged in said means, a water circulating means heated intermediate its ends by said heating element and leading from said jacket to said water receiving means, said water circulating means provided intermediate its ends and adjacent to its point being heated with a heating coil positioned within the steam table, a thermostatically controlled controlling valve for said water circulating means interposed in the latter in proximity to said water receiving means and having the thermostatic element thereof extending into the latter, and said water circulating means being formed adjacent said coil with an overflow extension.

DE ELLA B. MAYBERRY. 

